SS Southwark was an American ocean liner that was built by William Denny and Brothers for the American Line.

She was launched in 1893 and initially sailed on American Line's transatlantic route from Liverpool, via Queenstown, to Philadelphia.

In 1895, Southwark was sold to the Red Star Line which employed her on the Antwerp to New York route.

In 1903 she was sold to the Dominion Line for the Liverpool to Canada route.

Her sister ship was SS Kensington.